Coating machine



June 26, 1934. w J EISNER 1,964,343

COATING MACHINE Filed Sept. 11, 1931 20 v Mmwrae.

W/AL MM day/ma A TTORNEYS Patented June 26, 1934 UNITED STATES 1,964,343 COATING MACHINE William J. Eisner, Newark, N. J., assignor to Newark Paraffine & Parchment Paper 00., Newark, N. J., a corporation of New Jersey Application September 11, 1931, Serial No. 562,361

2 Claims. (Cl. 9150) This invention relates to coating and one object of the invention is to provide a machine or apparatus by means of which a coating which is initially liquid may be applied to a strip of material as the strip moves through the machine thereby permitting the coating to be quickly applied and the coated strip removed from the machine in the form of a rollor sheet.

Another object of the invention is to so con- 19 struct this coating machine that the coating substance may be evenly applied and distributed over the entire surface of the strip as it moves across an applying roller to which the liquid coating material is fed from a reservoir.

Another object of the invention is to provide the coating machine with a pressure roller which serves not only to hold the sheet in close contacting engagement with the applying roller but also serves as a heater to'maintain the coating substance in a liquid state as it is applied to the strip. Therefore, the coating substance will be evenly distributed and properly applied to the strip.

Another object of the invention is to permit the temperature of the pressure roller to be controlled and thereby maintained at the proper temperature according to the type of coating material which is to ,be applied to the mov ing strip, and in addition permit the pressure roller to be adjusted towards and away from the applying roller in order that the quantity of coating material taken up by the moving strip may be regulated and surplus coating material removed.

Another object of the invention is to provide this machine with idler rollers serving to guide movement of the strip through the machine, certain of these idler rollers being of such form that they will serve to remove any wrinkles or creases which may have formed in the strip and thereby cause the strip to be free from wrinkles or other blemishes.

The invention is illustrated in the accompanying drawing, wherein;

Figure 1 is a side elevation of the improved coating machine.

Figure 2'is a vertical sectional view through the same.

Figure 3 is a top plan view of the coating machine.

Figure 4 is a view in elevation of the roller which serves to prevent wrinkles.

Figure 5 is a sectional view taken longitudinally through the pressure roller and illustrating the manner in which the roller is heated to a desired temperature.

The improved coating machine illustrated in the accompanying drawing is to be employed in order to apply a coating to a moving strip of material in order that the material may be rendered moisture-proof, porous-proof, dry-proof and airproof. The material so coated will withstand atmospheric changes, he moisture-proof, air-proof and dirt-proof and the-coating will not be harmful to materials which are transparent or semitransparent, such as cellulose acetate, nitrocellulose, viscose and other similar material. The liquid applied as a coating may be paraffine, wax, gum, oil, coloring, resin, solvents, sizings, or clay, like preservatives or any combination thereof.

The frame of this improved machine has side members 1 and 2 which maybe referred to as uprights and between these side members extend bars 3 and 4 serving as a support for a pan or reservoir 5 in which the material to be used as a coating is placed. By referring to Figure 2, it will be seen that the pan may be easily removed when necessary. Openings 6 are formed in the uprights 1 and 2 above the pan 5 and in these 0 openings are set blocks 7 and 8 serving as mountings for rollers 9 and 10, the roller 10 constituting an applying roller and resting upon a feed roller 11 which extends into the pan '5 and the roller 9 constituting a heating and pressure applying roller. Stems 12 extend upwardly from the blocks 7 with upper ends projecting above the uprights and carrying adjusting nuts 13. Therefore, the roller 9 may be vertically adjusted and pressure applied thereby regulated.

Referring to Figure 5, it will be seen that the roller 9 is hollow and has heads 14 at its ends from which extend necks 15 carrying packing glands 16 in order that tight joints may be formed about a core or pipe 1'7 extending axially through the roller. At one end, the pipe 17 carries a coupling 18 to the branches of which are attached pipes 19 and 20, the pipe 19 leading from a source of water supply and the pipe 20-leading from a source of steam supply. Therefore, steam and water may be fed into the pipe 17 and by controlling the proportions of steam and Water, the temperature of the water may be controlled. It will, of course, be obvious that either water or steam alone may be fed to the pipe 17. Within the roller, the pipe is perforated as shown at 20 in order that the water may fill the interior of the roller and heat the roller to a desired temperature, and an outlet opening 21 is provided through which the water will return to the pipe and flow through 114] this pipe to a suitable place of disposal. A partition 22 controls the flow of water through the pipe and roller.

Referring to Figure 1, it will be seen that the rollers 9, 10 and 11, carry intermeshing gears 23, 24 and 25 and the shaft or pinion of the roller 11 upon which the gear'25 is mounted in addition carries a sprocket wheel 26 for engagement by a sprocket chain 27 trained about a sprocket wheel 28 carried by a shaft 29 which projects outwardly from the uprights 2 and in addition to the sprocket wheel 28 also carries a worm gear 30 meshing with a worm 31 upon a shaft 32.

The shaft 32 is rotatably supported by a bearing bracket 33 projecting outwardly from the upright 2 and a clutch 34 controlled by a lever 35 is provided in order that rotation of the shaft 32 may be controlled. The shaft 32 .also carries a worm 36 meshing with a worm gear 37 carried by the shaft 38 of a roller 39 upon which the strip of material 40 is to be wound after it has been coated. The roller 39 or its shaft may be removably mounted in any. desired manner in order that it may be removed when the roll of coated material is of the proper size.

It is necessary to guide movement of the strip 40 as it passes through the machine and in order' to do so, there has been provided a suitable number of idler rollers designated by the numerals 41, 42, 43, 44, 45 and 46. The roller 43 serves as a tensioning roller as well as a guide roller and the roller 45 serves as a smoothing roller. Since the roller 43 is to serve as a tensioning roller, it is rotatably mounted in blocks 4'7 slidably engaged in slots 48 and carrying stems 49 which project upwardly and have adjusting nuts 50 threaded upon their upperflends. This is clearly shown in Figures 1 and 2 and by inspecting these figures, it will be readily seen that by adjusting the nuts 50, pressure applied to the strip of material by the roller 43 may be accurately controlled. The roller 45 gradually tapers towards its ends, as shown in Figures 3 and 4. Therefore, this roller will serve very effectively to smooth the strip of coated material and remove any wrinkles from the same before it is delivered to the roller 39.

When this machine is in use, the strip or ma-' terial to be coated is fed through the machine as shown in Figure 2 and moved in the direction indicated by the arrows from a'suitable source of .supply to the roller 39 upon which it is formed into a roll. The coating material in the pan or trough 5 is in a liquid or semi-liquid state and as the rollers 9, 10 and 11 rotate, the feed roller 11 delivers the coating material to the applying roller 10 which applies it to the strip of material as this material moves between the rollers 9 and 10. The roller 9 is heated to the proper temperature to insure liquefaction of the coating material and the pressure applied by this roller will cause the coating material to be evenly distributed upon the strip. In addition, the pressure applied by the roller 9 will cause surplus coating material to be pressed from the strip of material and only the desired amount will remain when the strip of material passes from between the rollers 9 and 10. The coating material dries during the time required for the strip of material to pass from the rollers 9 and 10 to the roller 39 upon which it is wound in a roll and the roller 45 due to its shape serves to remove any wrinkles from the coated strip.

' upon the strip.

From the foregoing description of the construction of my improved apparatus, the operation thereof and the method of applying the same to use will be readily understood. It will be seen that I have provided a simple, inexpensive and efficient means for carrying out the objects of the invention and while I have particularly described the elements best adapted to perform the functions set forth, it is obvious that various changes in form, proportion and in the minor details of construction may be resorted to, without departing from the spirit of the invention.

Having thus described the invention what is claimed is:

1. A coating machine comprising a frame having spaced uprights, a container for coating material betweensaid uprights. guide rollers rotatably mounted between said uprights, an applying roller rotatably mounted between the uprights above said container, a delivery roller between said uprights contacting with said applying roller and extending into said container, a pressure roller above said applying roller, a mounting for said pressure roller slidably carried by said uprights and adjustably supported whereby the pressure roller may apply determined pressure to the strip as coating material is applied to the same, the pressure roller, applying roller and delivery roller having interengaging gears and the delivery roller also carrying a sprocket wheel, a bearing bracket carried by one upright, a drive shaft rotatably supported by said bearing bracket, a counter-shaft extending outwardly from the last mentioned upright, a sprocket wheel carried by said counter-shaft, a sprocket chain engaged with the said sprocket wheels for imparting rotary motion to said rollers, means for transmitting rotary motion from said drive shaft to said counter-shaft, a roller carried by said frame for forming a roll of the coated strip, and means for transmitting rotary motion from said drive shaft to the last mentioned roller.

2. A coating machine comprising a frame having spaced uprights, a container for coating material between said uprights, an applying roller rotatably mounted above said uprights and receiving coating material from said container, a pressure roller above said applying roller, a mounting for said pressure roller slidably carried by said uprights and adjustably supported whereby the pressure roller may apply determined pressure to a strip passing between the rollers as coating material is applied to the strip, said rollers having interengaging gears and one roller also carrying a sprocket wheel, a bearing bracket carried by one upright, a drive shaft rotatably supported by said bracket, a counter shaft rotated from said drive shaft, a sprocket wheel carried by said counter shaft, a sprocket chain engaged with said sprocket wheels for imparting rotary motion to said rollers, a roller carried by said uprights for forming a roll of coated strip, and

drive shaft tothe last mentioned roller.

WILLIAM J. EISNER. 

